docker: run sync by default, and add send/recv modes

Author: shtrom

Dockerfile

@@ -7,14 +7,15 @@ RUN apt-get update && \
     apt-get install --yes git mercurial curl vim && \
     apt-get -q --yes autoremove && \
     apt-get clean && \
-    rm -rf /root/.cache
+    rm -rf /root/.cache && \
+    rm -rf /var/lib/apt/lists/*
 
 WORKDIR /app
 
 # git-cinnabar
 COPY install_git-cinnabar.sh .
-RUN ./install_git-cinnabar.sh
-RUN mv git-cinnabar git-remote-hg /usr/bin/
+RUN ./install_git-cinnabar.sh \
+    && mv git-cinnabar git-remote-hg /usr/bin/
 
 # install test dependencies
 RUN pip install -U pip pytest pytest-mock pip-tools
@@ -23,10 +24,13 @@ RUN pip install -U pip pytest pytest-mock pip-tools
 # rebuild
 COPY --chown=app:app README.md .
 COPY --chown=app:app pyproject.toml .
-RUN pip-compile --verbose pyproject.toml
-RUN pip install -r requirements.txt
+RUN pip-compile --verbose pyproject.toml \
+    && pip install -r requirements.txt
 
 # copy app and install
 COPY --chown=app:app . /app
 RUN pip install /app
 USER app
+
+ENTRYPOINT ["/usr/local/bin/git-hg-sync"]
+CMD ["--config", "config-docker.toml"]

README.md

@@ -18,7 +18,45 @@ to produce the equivalent mercurial commits to the right repo (depending on the
 It finally pushes the changes to the remote mercurial repository… then goes back to step one to
 process the next message in the queue.
 
-## build and test
+## Run
+
+```console
+$ docker compose up -d
+```
+
+The logs from the syncer can be displayed with
+
+```console
+$ docker compose logs -f sync
+```
+
+XXX: queue config
+
+```
+rabbitmqadmin declare exchange name=exchange/git-hg-sync/test type=direct
+rabbitmqadmin declare queue name=queue/git-hg-sync/sync durable=true
+rabbitmqadmin declare binding source=exchange/git-hg-sync/test destination=queue/git-hg-sync/sync routing_key=git-hg-sync
+```
+
+The AMQP exchange is available at localhost:5672. To send a message, you can do the following
+
+```console
+$ docker compose run --rm send
+<enter payload here>
+```
+
+The message can be received with
+
+```console
+$ docker compose run --rm recv
+```
+
+XXX: example of test message
+
+The RabbimMQ management interface is available at http://localhost:15672/, and
+the login and password are `guest` (don't do this at home, or in prod).
+
+## Build and test
 
 Format and test/lint code:
 
@@ -29,7 +67,7 @@ $ tox -e format,lint
 Run tests:
 
 ```console
-$ docker compose run --build sync
+$ docker compose run --rm test
 $ docker compose down
 ```
 

docker-compose.yaml

@@ -1,9 +1,10 @@
 services:
-  sync:
+  sync: &sync_config
+    image: git_hg_sync
     build: .
-    command: ['pytest', '--junitxml=./tests_output/pytest.xml', 'tests/']
     volumes:
-      - ./tests_output:/app/tests_output
+      - .:/app
+      - ./tests_output:/app/tests_output:z
     environment:
       - RABBITMQ=true
     depends_on:
@@ -12,6 +13,31 @@ services:
     networks:
       - pulse_network
 
+  send:
+    image: rabbitmq:3-management-alpine
+    entrypoint: rabbitmqadmin publish --host pulse exchange=exchange/git-hg-sync/test routing_key=git-hg-sync
+    profiles:
+      - send
+    networks:
+      - pulse_network
+
+  recv:
+    image: rabbitmq:3-management-alpine
+    entrypoint: rabbitmqadmin get --host pulse queue=queue/git-hg-sync/sync
+    profiles:
+      - recv
+    networks:
+      - pulse_network
+
+  test:
+    <<: *sync_config
+    command: ["--junitxml=/tmp/tests_output/pytest.xml", "tests/"]
+    entrypoint: pytest
+    profiles:
+      - test
+    networks:
+      - pulse_network
+
   pulse:
     image: rabbitmq:3-management-alpine
     healthcheck: